820486503 has 20 divisors (see below), whose sum is σ = 1226446320. Its totient is φ = 546642432.

The previous prime is 820486463. The next prime is 820486573. The reversal of 820486503 is 305684028.

It is a de Polignac number, because none of the positive numbers 2^k-820486503 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (820486573) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 215926 + ... + 219692.

It is an arithmetic number, because the mean of its divisors is an integer number (61322316).

Almost surely, 2^820486503 is an apocalyptic number.

820486503 is a deficient number, since it is larger than the sum of its proper divisors (405959817).

820486503 is a wasteful number, since it uses less digits than its factorization.

820486503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6468 (or 6459 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 36.

The square root of 820486503 is about 28644.1355778107. The cubic root of 820486503 is about 936.1752322315.

The spelling of 820486503 in words is "eight hundred twenty million, four hundred eighty-six thousand, five hundred three".